کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
746204 894447 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fast-response ozone sensor with ZnO nanorods grown by chemical vapor deposition
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Fast-response ozone sensor with ZnO nanorods grown by chemical vapor deposition
چکیده انگلیسی

Nanostructures of ZnO grown by chemical vapor deposition were used as sensing materials. These materials, ZnO nanorods, were characterized by scanning electron microscopy (SEM), photoluminescence (PL) and X-ray diffraction (XRD). The ozone sensing properties of various ZnO nanomaterials were studied. Under 2.5 ppm ozone, ZnO nanorods showed a rapid response time of 45 s and recovery time of 5 s, and the sensor response (S, the ratio of the resistance in an ozone gas without UV to resistance in air with UV, S = Rozone/Rair) is 850. The low defect density and high mobility accounts for the fast response and recovery times. The sensor response was measured in the range from 1 to 2.5 ppm ozone in this study.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 144, Issue 1, 29 January 2010, Pages 120–125
نویسندگان
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